Home / 155,979.90-233,969.85-85,121.10

Finding the Fourth Proportional to 155,979.90, 233,969.85 and 85,121.10

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Solution

The fourth proportional to 155,979.90, 233,969.85 and 85,121.10 is: 127,681.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,979.90 : 233,969.85 = 85,121.10 : x
  2. Step 2: Convert to fraction form
    155,979.90/233,969.85 = 85,121.10/x
  3. Step 3: Cross multiply
    155,979.90x = 233,969.85 × 85,121.10
  4. Step 4: Simplify right side
    155,979.90x = 19,915,770,998.84
  5. Step 5: Solve for x
    x = 19,915,770,998.84/155,979.90
  6. Step 6: Final answer
    x = 127,681.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.